45 principal software engineer jobs at 27 companies in Eagleville, PA
1w
Save
Mark Applied
Hide
Principal Software Engineer
Trenton, New Jersey, United States
$106k-$142k/yr OnsiteFull Time
7+ YOEBachelor's in Information Systems/Computer Science/Engineering, 7+ years engineering or software development experience, strong Python and SQL skills, test-driven development, communication, autonomous work, project leadership.
Python, SQL, Supply Chain Guru, Llama.ai, NextMV, Gains, Sophus, Starboard, Optilogic, TMOD, Go
2w
Save
Mark Applied
Hide
Principal Software Engineer
Downers Grove or Willingboro
$140k-$180k/yr OnsiteFull Time
15+ YOE15+ years software engineering with enterprise architecture, cloud (Azure) modernization, microservices, eCommerce, AI/LLM production experience, and strong people mentoring and technical leadership.
React.js, Next.js, TypeScript, C#, .NET Core, Java, Python, Go, Kafka, Azure Service Bus, Event Hub, Cloudflare, Akamai, Azure Front Door, SQL Server, PostgreSQL, Redis, Cosmos DB, MongoDB, AKS, Azure App Service, Azure Functions, Azure SQL, Key Vault, Azure AD/Entra ID, Azure Monitor, Terraform, Bicep, Azure DevOps, GitHub Actions, Helm, Open Telemetry, Application Insights, Jaeger, Grafana, Prometheus, k6, JMeter, Azure Load Testing, Pinecone, Weaviate, pgvector, OpenAI, Anthropic, Gemini, LangChain, LangGraph, CrewAI, Playwright, Cypress, Pact, OAuth 2.0, OpenID Connect, Azure Data Factory, Azure Databricks
1w
Save
Mark Applied
Hide
Principal Software Engineer
Lititz or United States
OnsiteFull Time
12+ YOE12+ years software engineering experience; expert in scalable distributed systems, full-stack development, front-end frameworks, cloud-native apps, and technical leadership.
Vue.js, TypeScript, JavaScript, HTML, CSS, C#, .NET, Java, AWS, Kafka, Spark, Hadoop, Presto, GitHub Copilot, Claude Code, Codex
7h
Save
Mark Applied
Hide
Principal Software Engineer
Horsham or Markham or Canada
$128k-$178k/yr OnsiteFull Time
8+ YOEUniversity degree in electrical engineering or computer science; 8+ years embedded software experience, 5+ years optical networking experience, expert C/C++, networking protocols, Agile, DevOps, and embedded Linux.
LLDP, OSPF, BGP, C, C++, CI/CD, DevOps, SONiC, FRRouting, Open vSwitch, Netconf, Open Config, Yang models, ROADM, ILA, Go, Python, Embedded Linux, ISO 9000, ISO 9001, ISO 14001
1mo
Save
Mark Applied
Hide
Principal Software Engineer
Moorestown, New Jersey, United States
$128k-$218k/yr OnsiteFull Time
8+ YOEBachelor's in engineering/computer science or equivalent, U.S. citizenship, ability to obtain Secret clearance, 8+ years software development experience in real-time/mission systems, experience with Java, C++, or Python, Linux/UNIX, and IDEs.
Java, C++, Python, Linux, UNIX, Eclipse, UML, Clearcase, JIRA, xUnit, Junit, CPPUnitLite, Assemblers
1d
Save
Mark Applied
Hide
Principal Software Engineer
Philadelphia, Pennsylvania, United States
$180k-$212k/yr HybridFull Time
Significant software engineering and Microsoft Dynamics 365 experience with enterprise delivery leadership. Requires React, TypeScript, JavaScript, Azure Functions, .NET/C#, Power Platform, Azure, CI/CD, GitLab, and strong architecture and mentoring skills.
Microsoft Dynamics, Microsoft Dynamics 365, Microsoft Azure, Microsoft React, TypeScript, JavaScript, Azure Functions, .NET, C#, Microsoft Power Platform, Microsoft Power Apps, Microsoft Power Automate, Microsoft Copilot Studio, GitLab, CI/CD
4w
Save
Mark Applied
Hide
Principal Software Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
12+ YOE12+ years in 3D runtime or game engine development, expert C++ (C++17/20/23), graphics APIs (Vulkan, DirectX 12, Metal), engine integrations, profiling/optimization, and strong communication.
C++17, C++20, C++23, Vulkan, DirectX 12, Metal, Unreal Engine, Unity, NVIDIA Omniverse, glTF, 3D Tiles
4w
Save
Mark Applied
Hide
Software Engineer Principal
Sioux Falls or Scottsdale or Louisville or Troy or Franklin or Easton
$104k-$174k/yr RemoteFull Time
8+ YOEBachelor's or equivalent, typically 8+ years technical experience (6+ in software design), experience with .NET/C#/ASP.NET and related stack, Agile knowledge, cloud (Azure/AWS) preferred, strong communication and mentoring skills.
.NET, C#, ASP.NET, MVC, Classic ASP, VB Script, Entity Framework, WPF, JavaScript, IIS, HTML, CSS, XML/XSLT, MSMQ, NServiceBus, Microsoft Visual Studio, Microsoft Team Foundation Server, Git, Microsoft Azure DevOps, Microsoft Azure, AWS
2mo
Save
Mark Applied
Hide
Principal Software Engineer
Philadelphia, Pennsylvania, United States
$115k-$124k/yr OnsiteFull Time
3+ YOEBachelor’s degree or equivalent; 3+ years in .NET/C# web development; SQL and database experience; public sector/government experience a plus.
C#, SQL, SQL Server, Oracle, PostgreSQL, MySQL, .NET, FAST/GenTax
1mo
Save
Mark Applied
Hide
Principal Software Engineer - AI Engineer
Jersey City or Wilmington or Palo Alto
$204k-$285k/yr OnsiteFull Time
7+ YOE7+ years software engineering experience; strong Python and PyTorch/TensorFlow; experience with vector storage, agentic AI and LLM deployment, MLOps and CI/CD, cloud (AWS or Azure); leadership and responsible AI practices.
Python, PyTorch, TensorFlow, Vector storage systems, CI/CD, MLOps, AWS, Azure, LLM Suite
1w
Save
Mark Applied
Hide
Principal Software Engineer, Core Services
Wayne or Naperville
$160k-$185k/yr HybridFull Time
10+ YOE10+ years software engineering experience, bachelor’s in CS or equivalent, deep TypeScript/Node.js skills, cloud-native and distributed systems experience, leadership and mentoring experience.
TypeScript, Node.js, NestJS, EC2, Lambda, S3, SNS, SQS, Docker, Kafka, React, Kubernetes, GitHub Copilot, Claude Code, OpenAI Codex
1mo
Save
Mark Applied
Hide
Principal Embedded Software Engineer
Newark or Marlborough
$139k-$232k/yr HybridFull Time
12+ YOEExtensive embedded systems experience (RTOS, low-level firmware, device drivers), expert C/C++ and assembly skills, hardware/software integration, leadership and mentoring experience, familiarity with communication protocols (SPI, I2C, UART, CAN) and regulated medical device environments.
FreeRTOS, QNX, Zephyr, C, C++, Assembly, SPI, I2C, UART, CAN, Git, Perforce, Microsoft Azure DevOps, SVN, DICOM, HL7
1mo
Save
Mark Applied
Hide
Principal Software Engineer - Subscription & Paywall Platforms
Princeton, New Jersey, United States
$240k-$290k/yr HybridFull Time
Dow JonesNASDAQ: NWSA: A global news and business information provider delivering content across print, digital, mobile and live events.
12+ YOE12+ years software engineering experience with large-scale platform architecture; expertise in full-stack development, subscription/paywall systems, cloud-native architectures, APIs, databases, and applied ML for subscriptions.
React, Angular, TypeScript, NodeJS, SQL, NoSQL
1mo
Save
Mark Applied
Hide
Principal Software Engineer - Subscription & Paywall Platforms
Princeton, New Jersey, United States
$240k-$290k/yr HybridFull Time
12+ YOERequires 12+ years of software engineering experience, large-scale platform architecture and technical leadership, subscription/paywall expertise, full-stack development, distributed systems, cloud architectures, and cross-team technical influence.
React, Angular, TypeScript, NodeJS, SQL, NoSQL, AI, machine learning
4d
Save
Mark Applied
Hide
Principal Engineer, Platform Systems
Blue Bell or Boca Raton or Irving
$146k-$218k/yr HybridFull Time
10+ YOEBachelor's degree or equivalent experience and 10+ years of software engineering experience. Requires distributed systems, cloud-native architecture, cross-team technical leadership, direct implementation, and communication expertise.
Java, Spring, TypeScript, JavaScript, Kotlin, Swift, Python, C, C++, AWS, GCP, Docker, Kubernetes, CI/CD
4d
Save
Mark Applied
Hide
Principal Engineer, Platform Systems
Blue Bell or Boca Raton or Irving
$146k-$218k/yr HybridFull Time
10+ YOEBachelor's degree or equivalent experience and 10+ years of software engineering experience. Requires distributed systems, cloud-native architecture, cross-team technical leadership, hands-on implementation, communication, and mentoring expertise.
Java, Spring, TypeScript, JavaScript, Kotlin, Swift, Python, C, C++, AWS, GCP, Docker, Kubernetes
2mo
Save
Mark Applied
Hide
Principal Transmission Engineer
Lansdale, Pennsylvania, United States
OnsiteFull Time
10+ YOESupervisor of technical staff with 10+ years in power transmission design; ABET-accredited degree in Civil/Structural or Electrical Engineering; PE licensure; proficient in industry software.
PLS-CADD, MFAD, AutoCAD, Microsoft Office
2mo
Save
Mark Applied
Hide
Senior Principal Mechanical Engineer
Reading, Pennsylvania, United States
OnsiteFull Time
Extensive mechanical engineering experience with project leadership, cost estimating and proposal writing; competent with engineering software and MS Office; bachelor’s in mechanical engineering required; PE preferred.
Microsoft Office
1mo
Save
Mark Applied
Hide
Senior Principal Electrical Engineer
Reading or Charlotte or Kansas City
OnsiteFull Time
Extensive electrical engineering experience with project leadership, cost estimating, technical consulting, knowledge of standards, competency with electrical engineering software and Microsoft Office; BS/MS in engineering required; PE preferred.
Microsoft Office Suite
2mo
Save
Mark Applied
Hide
Principal Software Development Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
15+ YOEExtensive experience in Linux-based systems and C/C++/Golang/Python; knowledge of distributed systems, cloud-native/containerized environments, and carrier-grade network infrastructure; 15+ years relevant experience and Bachelor's degree preferred.
Linux, C, C++, Golang, Python, Docker, Kubernetes
Explore Jobs